Add orientation configuration for touchscreen devices

There are many instances where devices have display panels installed in
a different orientation than the device's default orientation. In these
cases, there is an SF flag to change the device's default orientation,
using ro.surface_flinger.primary_display_orientation. However, when that
is used, the touchscreens don't work in the expected orientation.

This CL adds the ability to configure the orientation of a touchscreen
device using an Input Device Configuration (IDC) file.

Bug: 196357204
Test: atest inputflinger_tests
Test: manual: ensure touch works as expected with
ro.sf.primary_display_orientation and touch.orientation set to 90

Merged-In: I1267f2b3fdb6faaef2923789bcaf5a6141971431
Change-Id: I1267f2b3fdb6faaef2923789bcaf5a6141971431